It appears to be a poisoncounterpart to Sleep Powder and Stun Spore, as the accuracy, Contest group, appeal, effects, Japanese names and animation are the same or very similar. They are also usually learned at the same level or in a similar pattern.

Amoonguss releases a thick gray smog with purple sparkles in it from its mouth. The gray smoke clusters in front of its face and then slowly dissipates, or Amoonguss releases a stream of thick gray smog with purple sparkles in it from its mouth at the opponent. The smoke hangs in the air all around for a moment before disappearing. When the opponent breathes in the powder, it becomes poisoned.